Performance Assessment Of Deaerator Control System For Nuclear Power Plant

Nuclear power is a kind of clear and effective energy. Prosperity of nuclear industry will help to ensure the safe of sources of energy and play an important role for the sustainable development of our country. Nuclear power plant has an extremely high demand for the safe of the system. The probability of severe accident must below 10-9 once per year. Deaerator is the key equipment of nuclear power plant's secondary circuit. The degression of its control performance will cause the deterioration of the feedwater, in the worst case,will endanger the whole system. How to assess the controler's performance, do the faulty detection and forecast it is not only this paper concerns but also attracts many scientists and engineers to research it.This paper uses minimum variance as bench mark, does the performance assessment for the deaerator's control system with filter and correlation (FCOR) arithmetic. Main works include:First, discuss the how the sampling period, time delay, data length and filter will influence the performance index, and find out the best choice of these parameter for deaerator system.Second, use the FCOR arithmetic with these parameters to do the real-time performance assessment, discuss the issues such as data validity, filter validity and performance index adjustment. On the basis of the discussion before, give an idea that use the change of the real-time performance index to do the faulty diagnosis. This idea based on the fact that: the time delay of deaerator is huge and the...